ECU Coding and Programming Advanced Features---Bidirectional Test/Active Tests Active Test can be employed on headlamps, windscreen wipers, windows & doors, and sunroof such as ✳️Turn On The Radiator Fan ✳️Open/ Close Windows/ Door ✳️Operate Mirrors ✳️EVAP Test/ Fuel Pump/ Fuel Injector Test ✳️Cycling a/c ✳️Clutc